Study on the influence of FCC waste catalysts on the interaction ability between asphalt and fillers

IF 3.2 3区 材料科学 Q2 ENGINEERING, CHEMICAL International Journal of Adhesion and Adhesives Pub Date : 2024-08-10 DOI:10.1016/j.ijadhadh.2024.103810
Zhimei Wang , Mengjie Gao , Chuanqiang Li , Lingyun Kong , Tianqing Ling , Hanqing Wang
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Abstract

Fluid catalytic cracking (FCC) waste catalysts produced by petroleum cracking contain many harmful substances, such as heavy metals, and improper treatment can lead to environmental pollution. To solve this problem, this study investigated four types of FCC (LM, SH, A, SL) waste catalyst as a substitute filler for limestone mineral powder and examined their interactions with asphalt and fillers. The X-ray fluorescence (XRF), scanning electron microscope and specific surface area tests were conducted to compare the performance of FCC waste catalyst and fillers. Meanwhile, the effects of FCC waste catalyst on asphalt mastic composed of limestone mineral powder and asphalt were evaluated using surface energy, interaction parameters, and FTIR. Results show that there is little difference in the main components of the four waste FCC catalysts and limestone mineral powder. However, the surface roughness and specific surface area of the FCC catalysts are significantly greater than those of limestone. Moreover, the addition of FCC waste catalyst can improve the adhesion of asphalt with fillers and aggregates, and significantly enhance the interaction capabilities between the filler and the base asphalt, especially for SH. FTIR analysis confirms that the aforementioned improvements are achieved through physical interactions. This study reveals the effects of different FCC waste catalysts on asphalt mortar, and provides a theoretical basis for promoting the practical application of FCC waste catalysts in road engineering.

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催化裂化废催化剂对沥青与填料相互作用能力的影响研究
石油裂解产生的流体催化裂化(FCC)废催化剂含有重金属等多种有害物质,处理不当会造成环境污染。为解决这一问题,本研究将四种催化裂化废催化剂(LM、SH、A、SL)作为石灰石矿粉的替代填料,并考察了它们与沥青和填料的相互作用。通过 X 射线荧光 (XRF)、扫描电子显微镜和比表面积测试来比较催化裂化废催化剂和填料的性能。同时,利用表面能、相互作用参数和傅立叶变换红外光谱评估了催化裂化废催化剂对由石灰石矿粉和沥青组成的沥青胶泥的影响。结果表明,四种催化裂化废催化剂和石灰石矿粉的主要成分差别不大。但是,催化裂化催化剂的表面粗糙度和比表面积明显大于石灰石。此外,添加催化裂化废催化剂可改善沥青与填料和集料的粘附性,显著增强填料与基质沥青之间的相互作用能力,尤其是对 SH 而言。傅立叶变换红外分析证实,上述改善是通过物理相互作用实现的。本研究揭示了不同催化裂化废催化剂对沥青砂浆的影响,为促进催化裂化废催化剂在道路工程中的实际应用提供了理论依据。
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来源期刊
International Journal of Adhesion and Adhesives
International Journal of Adhesion and Adhesives 工程技术-材料科学:综合
CiteScore
6.90
自引率
8.80%
发文量
200
审稿时长
8.3 months
期刊介绍: The International Journal of Adhesion and Adhesives draws together the many aspects of the science and technology of adhesive materials, from fundamental research and development work to industrial applications. Subject areas covered include: interfacial interactions, surface chemistry, methods of testing, accumulation of test data on physical and mechanical properties, environmental effects, new adhesive materials, sealants, design of bonded joints, and manufacturing technology.
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